'dude' originates from American English, specifically the word 'doodle,' where 'doodle' meant 'a dandy or fop.'

'doodle' transformed into the American English word 'dude' in the late 19th century, eventually becoming the modern English word 'dude.'

Initially, it meant 'a dandy or fop,' but over time it evolved into its current meaning of 'a man or guy.'